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GM recalls 3.8 million vehicles in North America due to braking issue

WASHINGTON — General Motors Co said Wednesday it was recalling 3.46 million U.S. pickup trucks and SUVs to address a vacuum pump issue that could make braking more difficult and that has been linked to 113 accidents and 13 injuries. The recall covers 2014-2018 model year vehicles, including some Cadillac Escalade, Chevrolet Silverado, Chevrolet Tahoe, GMC Sierra, Chevrolet Suburban and GMC Yukon vehicles. In late June, GM recalled 310,000 vehicles in Canada for the same issue. GM did not immediately explain why the Canadian recall occurred more than two months before it called back the vehicles in the United States. The recall was triggered because the amount of vacuum created by the vacuum pump may decrease over time, GM told the National Highway Traffic Safety Administration (NHTSA) in documents posted on Wednesday. The NHTSA opened a preliminary investigation into the issue last November, and said it had reports of nine related crashes and two injuries. It provided GM in July with additional field reports that prompted the automaker to open an investigation. GM said it could affect braking in "rare circumstances." The NHTSA said in a statement the "vehicles may experience brake boost failure, which would require increased brake pedal effort, leading to a hard brake pedal feel, and potentially increased stopping distance." GM said dealers will reprogram the electronic brake control module to improve how the system utilizes the hydraulic brake boost assist function when vacuum assist is depleted. GM said the vacuum assist pump, which is lubricated with engine oil that flows into the pump through a filter screen, can in some cases lose effectiveness over time, as debris such as oil sludge can accumulate on the filter screen. GM told NHTSA that prior model years used a different brake assist system design, and vehicles manufactured after 2018 were not equipped with the affected pump design. Separately, GM said on Wednesday it is recalling 270,000 additional U.S. vehicles in three smaller recalls, including 177,000 2018 Chevrolet Malibu cars with 1.5L turbo engines because an error in the engine control module software may result in the fuel injectors being disabled.

Next-gen Chevy Camaro ZL1 teases big changes under its camo

With work complete on the lighter, stiffer 2016 Camaro, it's time for Chevrolet's engineers to really start having fun by developing the next, ZL1 version. Here it is for the first time. Unfortunately, the muscle car is still wearing quite a bit of camouflage, but the concealment isn't enough to hide some of the meaner model's more obvious performance tweaks. Starting from the front, this Camaro now wears a much more aggressive front fascia with bigger air inlets. Managing the airflow around the engine bay is clearly a big deal because another photo reveals a fairly large extractor in the hood, as well. Moving down the profile, the lower side sills and orientation of the camo suggest some blistered fenders in the back to cover wider rubber, and at the very rear a much larger wing further suggests the need to keep things planted to the road. Check out the comparison images in the gallery for a better look at the tweaks. What will power the next ZL1 is still entirely a mystery, although sticking with a supercharged 6.2-liter V8 could be a possibility, especially if you take the big extractor in the hood as a hint. Whereas the current ZL1 makes 580 horsepower and 556 pound-feet of torque, the LT4 in the latest Cadillac CTS-V pumps out 640 hp and 630 lb-ft. Combined with the Camaro's other improvements, we're thinking that this new ZL1 will be quite a hot ticket, and based on these spy shots, we can't wait to find out.

Tech of the Year special, plus we drive the hydrogen Mirai and more | Autoblog Podcast #809

In this episode of the Autoblog Podcast, Editor-in-Chief Greg Migliore is joined by Senior Editor James Riswick and Road Test Editor Zac Palmer. They kick the discussion off by talking about what they've been driving as of late, including the Toyota Mirai, Dodge Hornet, Alfa Romeo Tonale and a trio of subcompact SUVs. After that, they dive into a discussion about the 2023 Autoblog Technology of the Year award winner, which is Mercedes-Benz's Dolby Atmos Spatial Audio. Once they wrap up that segment, we get to hear the crew's latest Cybertruck takes from before the big reveal. Finally, the show wraps up with a fun Spend My Money segment. Send us your questions for the Mailbag and Spend My Money at: Podcast@Autoblog.com. Autoblog Podcast #809 Get The Podcast Apple Podcasts – Subscribe to the Autoblog Podcast in iTunes Spotify – Subscribe to the Autoblog Podcast on Spotify RSS – Add the Autoblog Podcast feed to your RSS aggregator MP3 – Download the MP3 directly Rundown What we're driving 2023 Toyota Mirai 2023 Dodge Hornet 2024 Alfa Romeo Tonale 2024 Chevy Trax 2024 Kia Seltos 2024 Mazda CX-30 Turbo Technology of the Year winner and breakdown News Cybertruck preview Spend My Money Feedback Email – Podcast@Autoblog.com Review the show on Apple Podcasts Autoblog is now live on your smart speakers and voice assistants with the audio Autoblog Daily Digest. Say “Hey Google, play the news from Autoblog” or "Alexa, open Autoblog" to get your favorite car website in audio form every day. A narrator will take you through the biggest stories or break down one of our comprehensive test drives. Related video: Green Podcasts Alfa Romeo Chevrolet Dodge Kia Mazda Mercedes-Benz Toyota Technology Infotainment Technology of the Year Crossover SUV Electric Luxury Performance Sedan Podcasts